Shortly after their graduation, the members of the 104th Cadet Corps are suddenly forced into a fight against the Titans as the Colossal Titan appears at Trost District and breaks through the Wall. During the battle, Eren Jaeger learns of the mysterious power deep inside him.
|5|| First Battle: The Struggle for Trost, Part 1|
(初陣 ―トロスト区攻防戦①― Uijin -Torosuto-ku Kōbōsen (1)-?)
|May 5, 2013|
|Eren's fight with the Colossal Titan comes to an abrupt halt when the creature vanishes without a trace. The cadets are entrusted with the defense of the city, causing many to panic or lose hope, and Mikasa worries for Eren's life. When the battle begins, Eren's squad is quickly decimated by the invading Titans. Armin is saved from the brink of death by Eren, but Eren is eaten in his place.|
|6|| The World the Girl Saw: The Struggle for Trost, Part 2|
(少女が見た世界 ―トロスト区攻防戦②― Shōjo ga Mita Sekai -Torosuto-ku Kōbōsen (2)-?)
|May 12, 2013|
|Eren's death weighs heavily on Armin's mind while Mikasa forcefully persuades a merchant boss to allow the civilians to evacuate the district before his goods. She recalls the day six years ago when Eren saved her from bandits who killed her parents, the day she received her scarf and began considering Eren as family.|
|7|| Small Blade: The Struggle for Trost, Part 3|
(小さな刃 ―トロスト区攻防戦③― Chīsana Yaiba -Torosuto-ku Kōbōsen (3)-?)
|May 19, 2013|
|Things turn bleak for the cadets when headquarters is overrun by Titans, leaving them unable to resupply before evacuation. After Mikasa learns of Eren's death, she leads a reckless charge for HQ but gets separated from the others. She nearly accepts her imminent death until she finds the will to fight, but she is miraculously saved with the arrival of a mysterious Titan that fights other Titans, a manifestation of humanity's rage.|
|8|| I Can Hear His Heartbeat: The Struggle for Trost, Part 4|
(心臓の鼓動が聞こえる ―トロスト区攻防戦④― Shinzō no Kodō ga Kikoeru -Torosuto-ku Kōbōsen (4)-?)
|May 26, 2013|
|As Jean leads the cadets to the Trost HQ, the mysterious Titan is lured there by Mikasa, Armin, and Conny. The Titan fights the others outside while the cadets enact a strategy to clear out the Titans from the supply room. After resupplying, some cadets notice the mysterious Titan collapsing from exhaustion after killing the remaining Titans. Miraculously, Eren Jaeger emerges unconscious from the Titan's nape, alive and healed.|
|9|| Whereabouts of His Left Arm: The Struggle for Trost, Part 5|
(左腕の行方 ―トロスト区攻防戦⑤― Hidariude no Yukue -Torosuto-ku Kōbōsen (5)-?)
|June 2, 2013|
| The Scouts on a scouting mission beyond Wall Rose receive news of the attack on Trost, and Commander Erwin orders for an immediate retreat. Meanwhile, Eren is brought before the leaders of the Garrison to answer for his sudden Titan powers.
Eren attempts to convince the captain that he is human, but his words fall on deaf ears. When the captain orders the artillery crew to fire upon Eren, he transforms into a partial Titan to shield his friends from the blast.
|10|| Response: The Struggle for Trost, Part 6|
(応える ―トロスト区攻防戦⑥― Kotaeru -Torosuto-ku Kōbōsen (6)-?)
|June 9, 2013|
|Eren's sudden transformation comes as a shock to both the Garrison and his fellow cadets. Armin decides to put his life on the line and argue for Eren's sake before the captain, but the man is unmoved. However, the confrontation is resolved with the arrival of Commander Pyxis, who desires to follow the plan which Armin has devised to seal the breach in Wall Rose.|
|11|| Idol: The Struggle for Trost, Part 7|
(偶像 ―トロスト区攻防戦⑦― Gūzō -Torosuto-ku Kōbōsen (7)-?)
|June 16, 2013|
|Commander Pyxis announces the plan to seal Wall Rose with a boulder in the city, but the soldiers and cadets are reluctant to follow. Given the dire circumstances, Pyxis convinces the troops to take the risk. Under the command of the Garrison elite squad, Eren approaches the boulder while the other soldiers distract the Titans. However, upon transforming into his Titan form, he immediately attacks Mikasa.|
|12|| Wound: The Struggle for Trost, Part 8|
(傷 ―トロスト区攻防戦⑧― Kizu -Torosuto-ku Kōbōsen (8)-?)
|June 23, 2013|
| Eren's sudden assault causes conflict among the Garrison elite squad, though Ian believes it is best to defend Eren at all costs. Meanwhile, the cadets continue to distract the Titans in the city, though Jean's ODM gear malfunctions and he is cornered.
Seeing flares signalling failure, Armin travels to Eren and speaks to him by cutting into his Titan's nape, reminding him of his dreams to see the outside world. His willpower rekindled, Eren's Titan begins to heal its wounds.
|13|| Primal Desire: The Struggle for Trost, Part 9|
(原初的欲求 ―トロスト区攻防戦⑨― Genshoteki Yokkyū -Torosuto-ku Kōbōsen (9)-?)
|June 30, 2013|
| After the skirmishes between the cadets and the Titans come to a close, the soldiers of Trost see Eren carrying the boulder to the breach and defend him with their lives. Once the breach is sealed, the Scout Regiment arrives to assist in clearing out the remaining Titans.
After the battle, the cadets assist in clearing out the corpses, and Jean finds Marco's body. Some time later, Eren awakens in a cell supervised by Commander Erwin and Captain Levi, who accepts him into the Scouts.